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(No Model.)

J. BOND, Jr.

Mechanical Movement.

No. 238,839 Patented March 15,1881.

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UNITED STATES PATENT ()FFIcE.

JOSEPH BOND, JR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB OF ONE- HALF TO CHARLES M. SWAIN, OF SAME PLACE.

MECHANICAL MOVEM ENT.

SPECIFICATION forming part of Letters Patent No. 238,839, dated March 15, 1881.

Application filed September 27, 1880. (No model.) i

To all whom it may concern:

Be it known that I, JOSEPH BOND, Jr., a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented a new Mechanical Movement, of which the following is a specification.

My invention consists of a device (described hereinafter) for transmitting rotary motion from one shaft to another without the inter- IO vention of gearing, belts, and other ordinary driving appliances.

In the accompanying drawings, Figure l is a perspective view of my improved mechanical movement, and Fig. 2 a plan view illustrating a modification of my invention.

In Fig. 1, A and B are two shafts, one of which has to be driven from the other, the shaft A being furnished with a crank or crankwheel, a, and the shaft B with a similar crank Each crank is furnished with a crank-pin, d, the two pins being at equal distances from the centers of their respective shafts, or, in other words, the throw of the two cranks being alike. The pins of the two 2 5 cranks are connected together by a rod, D, through the medium of which and the said cranks one shaft has to be rotated from the other; but in order that this can be done the rod must always be at right angles to the lines 0 aas, drawn through the centers of the shafts; and to effect this purpose I secure to the fixed frame of the machine (which, in the present instance, is a plate, F) a rod, G, or other equivalent guide, situated at right angles to the 3 5 said rod D. On this guide a plate or crosshead, H, is arranged to slide freely; or the cross-head may be secured to the rod and the latter may be arranged to slide in suitable projections, h h, on the plate F. The cross-head is provided with guides i 2', adapted to the connecting-rod D, so that, the cross-head being unable to move in any direction excepting at right angles to the connecting-rod, and the latter being guided by the cross-head, the parallelism of the said rod is always assured, and the turning of one shaft must be as certainly simultaneous with that of the other shaft as though they were geared together by ordinary cog-wheels.

It is not essential in all cases that the shafts A and B should be in a line parallel with the connecting-rod D. In the modification, Fig. 2, for instance, the shaft A is farther removed from the connecting-rod than the shaft B. In this case the crank-pin d of the crank-wheel a is embraced by the end of an arm, 10, secured to one end of the connecting-rod D; but what; ever may be the lateral position of the two shafts in respect to the connecting-rod, the throw of the cranks must always be the same, the length of the arm to being determined by. the extent to which the shafts are out of line with each other.

I claim as my invention- A mechanical movement in which a rod, D, connecting the crank-pins d of two cranks, is combined with a cross-head guided trans versely to the said con meeting-rod, and having a guide or guides for the latter, all substantially as set forth.

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH 'BOND, JR.

Witnesses:

JAMES F. ToBIN, HARRY SMITH. 

